1
AIEEE 2012
+4
-1
The length of the diameter of the circle which touches the $$x$$-axis at the point $$(1, 0)$$ and passes through the point $$(2, 3)$$ is :
A
$${{10} \over 3}$$
B
$${{3} \over 5}$$
C
$${{6} \over 5}$$
D
$${{5} \over 3}$$
2
AIEEE 2011
+4
-1
Out of Syllabus
The two circles x2 + y2 = ax, and x2 + y2 = c2 (c > 0) touch each other if :
A
| a | = c
B
a = 2c
C
| a | = 2c
D
2 | a | = c
3
AIEEE 2010
+4
-1
The circle $${x^2} + {y^2} = 4x + 8y + 5$$ intersects the line $$3x - 4y = m$$ at two distinct points if :
A
$$- 35 < m < 15$$
B
$$15 < m < 65$$
C
$$35 < m < 85$$
D
$$- 85 < m < -35$$
4
AIEEE 2009
+4
-1
Three distinct points A, B and C are given in the 2 -dimensional coordinates plane such that the ratio of the distance of any one of them from the point $$(1, 0)$$ to the distance from the point $$(-1, 0)$$ is equal to $${1 \over 3}$$. Then the circumcentre of the triangle ABC is at the point :
A
$$\left( {{5 \over 4},0} \right)$$
B
$$\left( {{5 \over 2},0} \right)$$
C
$$\left( {{5 \over 3},0} \right)$$
D
$$\left( {0,0} \right)$$
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